Global Patent Index - EP 4201908 A1

EP 4201908 A1 20230628 - DEVICE AND METHOD FOR MANUFACTURING CEMENT CLINKER AND CALCINED CLAY

Title (en)

DEVICE AND METHOD FOR MANUFACTURING CEMENT CLINKER AND CALCINED CLAY

Title (de)

VORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG VON ZEMENTKLINKER UND KALZINIERTEM TON

Title (fr)

DISPOSITIF ET PROCÉDÉ DE FABRICATION DE CLINKER DE CIMENT ET D'ARGILE CALCINÉE

Publication

EP 4201908 A1 20230628 (EN)

Application

EP 21217500 A 20211223

Priority

EP 21217500 A 20211223

Abstract (en)

Method and device for the combined manufacturing of cement clinker (c) and calcined clay (d), wherein the cement clinker (c) is produced in a cement manufacturing line (10) by the steps:providing a cement raw meal (a), preheating and precalcining the cement raw meal (c) in a preheater and calciner section (11), sintering the precalcined cement raw meal in a rotary kiln (15) to provide the cement clinker (c) and cooling the cement clinker (c) with a counter current air stream in a clinker cooler (17) providing hot air,and wherein the calcined clay (d) is produced in a clay manufacturing line (20) by the steps:providing a clay raw material (b), preheating the clay raw material (b) in a heat exchange section (21), and calcining the preheated clay raw material suspended in gas in a flash calciner (23) to provide the calcined clay (d),wherein the hot air from the cooler (17) is divided into at least two streams, a first combustion air stream used in sintering the cement raw meal and a second combustion air stream used in calcining the clay raw material, and whereinexhaust gas from calcining clay raw material is fed into the calcination (13) of the preheated cement raw meal.

IPC 8 full level

C04B 7/47 (2006.01)

CPC (source: EP)

C04B 7/475 (2013.01); C04B 2290/20 (2013.01)

Citation (applicant)

  • US 6168424 B1 20010102 - RAYNAUD GILBERT [FR], et al
  • WO 2021124261 A1 20210624 - HOLCIM TECHNOLOGY LTD [CH]
  • EP 20208395 A 20201118
  • "A focus on flash calcining", INT. CEMENT REVIEW, January 2021 (2021-01-01)
  • "Clay calcining technologies: the rotary kiln approach", INT. CEMENT REVIEW, August 2021 (2021-08-01)

Citation (search report)

Citation (third parties)

Third party : Tegel & Meyer

  • ANONYMOUS: "Puzzolane aus Calcinierung kalkhaltiger und dotierter Tone - Untersuchungen zu de-ren Hydratationsverhalten im Zement", VDZ GGMBHFORSCHUNGSINSTITUT DER ZEMENTINDUSTRIE,19744 N, 1 January 2018 (2018-01-01), pages 1 - 5, XP093116633
  • HANEIN THEODORE; THIENEL KARL-CHRISTIAN; ZUNINO FRANCO; MARSH ALASTAIR T. M.; MAIER MATTHIAS; WANG BIN; CANUT MARIANA; JUENGER MAR: "Clay calcination technology: state-of-the-art review by the RILEM TC 282-CCL", MATERIALS AND STRUCTURES, vol. 55, no. 1, 20 December 2021 (2021-12-20), Dordrecht, XP037647494, ISSN: 1359-5997, DOI: 10.1617/s11527-021-01807-6

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4201908 A1 20230628; AU 2022420382 A1 20240523; CA 3235237 A1 20230629; WO 2023117466 A1 20230629

DOCDB simple family (application)

EP 21217500 A 20211223; AU 2022420382 A 20221208; CA 3235237 A 20221208; EP 2022085001 W 20221208